Article History
Received: 10 November 2018
Accepted: 26 November 2018
First Online: 28 December 2018
Ethics approval
: This study was approved by the Institutional Animal Care and Use Committee of the Gangneung-Wonju National University, Gangneung, South Korea (GWNU-2017-16).
: Not applicable
: The authors declare that they have no competing interests.
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